I'm getting a property built that will consist of a main house plus holiday let, all within the same building. Is it possible to design the circuits in such a way that the holiday flat could, in the future, be metered separately? This would be a necessity if we sell the flat as a stand alone property. So that at the point of entry into the house you would essentially have two circuits that could be connected to the same meter and consumer unit and then at a future date switch one circuit over to a new meter and consumer unit? And is it possible to measure the usage on the holiday flat whilst still part of the main house? ie is it possible to insert some kind of meter to measure how much the holiday flat is consuming. For longer term lets I'd like to bill separately for untilities.